THE EFFECT OF PIB MOLECULAR WEIGHT ON THE CLING CHARACTERISTICS OF POLYETHYLENE/PIB FILMS FOR STRETCH AND CLING FILM APPLICATIONS

摘要

The effect of molecular weight on the migratory characteristics of polyisobutylene (PIB) additive from the bulk to the surface of a range of mono-layer and multilayer extruded polyethylene films was analysed by FTIR-ATR and peel cling analysis. Migration rates were shown to be higher for low molecular weight additive and cling strength increased as the PIB molecular weight increased.